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A291173 as a simple table

na(n)
12
242
390
4210
5630
61050
71470
82310
96930
1016170
1130030
1290090
13150150
14210210
15570570
16690690
17870870
182072070
193573570
203993990
214834830

[2,42,90,210,630,1050,1470,2310,6930,16170,30030,
 90090,150150,210210,570570,690690,870870,2072070,
 3573570,3993990,4834830]